Updated absolute gravity rate of change associated with glacial isostatic adjustment in Southeast Alaska and its utilization for rheological parameter estimation

Naganawa, Kazuhiro; Kazama, Takahito; Fukuda, Yoichi; Miura, Satoshi; Hayakawa, Hideaki; Ohta, Yusaku; Freymueller, Jeffrey T.

doi:10.1186/s40623-022-01666-7

Earth, Planets and Space

Table 2 Reprocessed AG at gravity points in SE-AK

From: Updated absolute gravity rate of change associated with glacial isostatic adjustment in Southeast Alaska and its utilization for rheological parameter estimation

AG point	Year	Dates	AG value [\(\upmu\)Gal]	SD [\(\upmu\)Gal]	SE [\(\upmu\)Gal]	UC [\(\upmu\)Gal]	\(N_s\)	\(N_d\)
EGAN	2006	Jun14–Jun16	981760220.08	1.56	0.17	2.18	89	8834
	2007	May31–Jun02	981760219.75	1.10	0.14	2.12	66	6568
	2008	May30–Jun01	981760211.63	1.24	0.13	2.12	95	9437
	2012	Jun13–Jun15	981760207.25	1.70	0.13	2.12	169	16760
	2013	Jun10–Jun12	981760193.50	2.03	0.19	2.18	118	14082
	2015	May30–Jun02	981760194.66	2.52	0.22	2.13	133	13110
MGVC^a	2006	Jun16–Jun18	981745281.62	1.73	0.16	2.10	119	11798
	2007	Jun02–Jun04	981745277.38	1.18	0.15	2.13	58	5718
	2008	Jun02–Jun04	981745272.62	1.22	0.12	2.15	96	9422
	2012	May31–Jun02	981745272.53	1.44	0.19	2.23	56	5473
	2013	Jun12–Jun15	981745259.39	2.53	0.25	2.13	104	12228
	2015	Jun14–Jun17	981745268.77	1.93	0.18	2.13	112	11051
GBCL	2006	Jun03–Jun05	981768410.16	1.48	0.15	2.08	92	9135
	2007	Jun04–Jun08	981768409.84	1.69	0.13	2.14	160	15952
	2008	Jun11–Jun13	981768398.93	1.81	0.17	2.13	116	11533
	2012	Jun04–Jun06	981768391.04	2.16	0.22	2.29	100	9846
	2013	Jun03–Jun04	981768384.24	3.00	0.32	2.17	90	8932
	2015	Jun05–Jun07	981768371.42	2.04	0.18	2.19	126	12527
RUSG^b	2006	Jun07–Jun09	981796822.55	2.16	0.23	2.13	89	8708
	2007	Jun10–Jun12	981796822.41	1.35	0.14	2.17	92	9134
	2008	Jun07–Jun10	981796815.62	1.49	0.15	2.14	94	9334
	2012	Jun09–Jun10	981796832.52	25.43	2.86	3.81	79	7752
	2013	Jun07–Jun08	981796791.54	4.00	0.40	2.58	100	9638
	2015	Jun09–Jun11	981796783.91	2.25	0.23	2.12	100	9894
HNSG	2006	Jun11–Jun13	981832008.48	1.58	0.14	2.16	123	12205
	2007	Jun14–Jun17	981832003.60	1.70	0.15	2.14	128	12698
	2008	Jun15–Jun18	981831997.90	1.71	0.15	2.10	124	12288
	2012	Jun17–Jun18	981831990.15	1.64	0.17	2.15	92	9126
	2013	Jun16–Jun18	981831977.17	2.54	0.29	2.17	75	8863
	2015	Jun17–Jun19	981831973.66	1.60	0.16	2.12	101	9992
BRMC^c	2007	Jun18–Jun20	981660211.75	1.47	0.15	2.15	94	9308
	2008	Jun19–Jun21	981660206.72	1.30	0.16	2.08	64	6297
	2012	Jun19–Jun21	981660201.73	1.50	0.16	2.14	90	8771
	2013	Jun19–Jun20	981660196.67	4.19	0.42	2.14	99	9776
	2015	Jun20–Jun22	981660186.23	2.08	0.20	2.07	113	10958

SD, SE, UC, \(N_s\) and \(N_d\) indicate the standard deviation, standard error, uncertainty, set and drop numbers, respectively. SE was calculated as the ratio of SD to the root of \(N_s\). UC was estimated in the g9 software, by considering errors associated with instrumental systems and gravity data corrections.
^a The AG values at MGVC in 2012–2015 include the gravity difference between the old and new gravity points.
^b The AG at RUSG in 2012 has large errors due to the failure of the long-period spring in the FG5 gravimeter.
^c No AG measurement was conducted at BRMC in 2006.

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